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As we all know, the energy of the sun is very large. Th […]
As we all know, the energy of the sun is very large. The sun radiates about 17 trillion kilowatts of energy on the earth's surface every second, which is equivalent to 35,000 times the current total annual energy consumption in the world, and it is inexhaustible.
Solar energy is widely distributed on the earth, and photovoltaic power generation systems can be used as long as there is light, regardless of geographical, altitude and other factors.
Solar energy can supply power nearby to avoid power loss caused by long-distance power transmission.
The solar energy conversion process is simple, and can directly convert from light energy to electrical energy, without intermediate processes and mechanical movement, and there is no mechanical wear. According to thermodynamic analysis, solar power generation has high power generation efficiency and huge potential for technological development.
Solar power generation itself does not use fuel, does not emit any harmful gas, does not pollute the environment, and does not produce noise. It is a truly green and environmentally friendly renewable energy source.
The solar power generation process does not require cooling water, can be installed on the desert Gobi, and can be perfectly integrated with buildings. It does not need to occupy a separate land, which can save valuable land resources.
Solar panels have a long service life, generally up to 20-35 years.
Solar energy combines many advantages, so if solar energy can be fully converted and utilized, it will not only reduce the consumption of earth resources, but will not pollute the environment.
The following is the emission reduction data of solar energy sources:
1. Coal consumption per kilowatt-hour: my country currently consumes an average of 390 grams of standard coal per kilowatt-hour for power generation.
2. Every 1 kilowatt hour of electricity emits about 1.4 kilograms of carbon dioxide.
3. Each watt of photovoltaic modules generates an average of 2 kWh per year.
4. Each watt of photovoltaic modules reduces carbon dioxide emissions by an average of 2.8 kg per year.
According to EPIA's estimation, the carbon dioxide emission reduction effect of replacing diesel generators by photovoltaic power generation is 1 kg/kWh; the average emission reduction effect of photovoltaic grid-connected power generation is 0.6 kg/kWh.
It can be seen that the environmental benefits of solar energy are considerable. Once solar energy is widely used worldwide, it will effectively control the greenhouse effect and prevent more tragedies. It can be said that solar energy is the only way to solve the contradiction between "increased energy demand for economic development" and "people's demand for high-quality environment". "As we all know, the energy of the sun is very large.